code: def test_read_window(self):
      with rasterio.open("tests/data/RGB.byte.tif") as s:
          # window with 1 nodata on band 3
          a = s.read(window=((300, 320), (320, 330)), masked=True)
          self.assertEqual(a.ndim, 3)
          self.assertEqual(a.shape, (3, 20, 10))
          self.assertTrue(hasattr(a, "mask"))
          self.assertEqual(a.mask.sum((1, 2)).tolist(), [0, 0, 1])
          self.assertEqual(
              [md5(x.tobytes()).hexdigest() for x in a],
              [
                  "1df719040daa9dfdb3de96d6748345e8",
                  "ec8fb3659f40c4a209027231bef12bdb",
                  "5a9c12aebc126ec6f27604babd67a4e2",
              ],
          )
          # window without any missing data, but still is masked result
          a = s.read(window=((310, 330), (320, 330)), masked=True)
          self.assertEqual(a.ndim, 3)
          self.assertEqual(a.shape, (3, 20, 10))
          self.assertTrue(hasattr(a, "mask"))
          self.assertEqual(
              [md5(x.tobytes()).hexdigest() for x in a[:]],
              [
                  "9e3000d60b4b6fb956f10dc57c4dc9b9",
                  "6a675416a32fcb70fbcf601d01aeb6ee",
                  "94fd2733b534376c273a894f36ad4e0b",
              ],
          )
  
imports: from hashlib import md5
  import unittest
  import numpy
  import pytest
  import rasterio
  from rasterio.errors import DatasetIOShapeError
label_desc: Use image node_id 9 for calling the ReaderContextTest obj's underlying member method code with example usage: obj.test_read_window() without return types